Improvement in founders



ABEL WAINWRIGHT, or SPRING CITY, PENNSYLVANIA.

lMPROVEMENT EN FOUNDERS FACBNGS.

Specification forming part ,of Letters Patent No. Q0?,3QH, dated August20, 1878 application filed a 7 June 8, 1878.

graphite and anthracite, and grind them to a powder, which is afterwardbolted. The facing thus produced will be placed in bags and applied tosand molds by dusting. While the graphite is fire-proof, the anthraciteprevents sticking. The hardness of an thracite prevents any rapidburning of the material; hence it is admirably adapted for foundersfacings. Moreover, my combination takes up or absorbs the. moisture ofthe sand-a matter of great importance in the art.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

The combination of graphite or plumbago and anthracite, forming foundersfacings,sub-

stantially as and for the purpose set. forth.

ABEL WAIN WRIGHT. Witnesses:

J OHN A. WIEDERSHEIM, H. E. GARSED.

